Results 21 to 30 of about 301,568 (186)

Extensions of some differential inequalities for fractional integro-differential equations via upper and lower solutions

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2023
This paper deals with some differential inequalities for generalized fractional integro-differential equations by using the technique of upper and lower solutions.
A. Yakar, H. Kutlay
doaj   +1 more source

Harnack inequality for SDE with multiplicative noise and extension to Neumann semigroup on nonconvex manifolds [PDF]

open access: yes, 2010
By constructing a coupling with unbounded time-dependent drift, dimension-free Harnack inequalities are established for a large class of stochastic differential equations with multiplicative noise.
Wang, Feng-Yu
core   +1 more source

Differential and integral inequalities [PDF]

open access: yesProceedings of the American Mathematical Society, 1964
RAYMOND M. REDHEFFER This note presents new proofs for some important inequalities [l]. The assumptions on positivity or monotony of the various functions are weaker than those in [l] or in the original references (see [l]) and yet the method seems astonishingly elementary. We set u' = du/dt, and ?2^0; the reversal of inequalities for ? 0. Then (1) Tu ^
openaire   +1 more source

Differential Inequalities and Univalent Functions [PDF]

open access: yesLobachevskii Journal of Mathematics, 2019
10 pages; To appear in Lobachevskii Journal of ...
Ali, Rosihan   +2 more
openaire   +4 more sources

Concavity of solutions of a 2n-th order problem with symmetry [PDF]

open access: yesOpuscula Mathematica, 2013
In this article we apply an extension of a Leggett-Williams type fixed point theorem to a two-point boundary value problem for a \(2n\)-th order ordinary differential equation.
Abdulmalik Al Twaty, Paul W. Eloe
doaj   +1 more source

On second order differential inequalities [PDF]

open access: yesProceedings of the American Mathematical Society, 1966
The proof of the sufficiency of the differential inequality is based on [1, Lemma 1, p. 565 ] but the proof of the lemma does not appear to be correct. After some preliminary results in ?1, we give in ?2 a proof of Theorem 1 by a quite different method.
Jackson, L., Schrader, K.
openaire   +1 more source

Sobolev Inequalities for Differential Forms and $L_{q,p}$-cohomology [PDF]

open access: yes, 2005
We study the relation between Sobolev inequalities for differential forms on a Riemannian manifold $(M,g)$ and the $L_{q,p}$-cohomology of that manifold.
D. Gilbarg   +13 more
core   +4 more sources

Lyapunov-type inequalities for fractional differential equations: a survey [PDF]

open access: yesSurveys in Mathematics and its Applications, 2021
A survey of results on Lyapunov-type inequalities for fractional differential equations associated with a variety of boundary conditions is presented.
Sotiris K. Ntouyas, Bashir Ahmad
doaj  

Halanay type inequalities on time scales with applications

open access: yes, 2011
This paper aims to introduce Halanay type inequalities on time scales. By means of these inequalities we derive new global stability conditions for nonlinear dynamic equations on time scales. Giving several examples we show that beside generalization and
Adıvar, Murat, Bohner, Elvan Akın
core   +1 more source

On maximal inequalities for purely discontinuous martingales in infinite dimensions

open access: yes, 2013
The purpose of this paper is to give a survey of a class of maximal inequalities for purely discontinuous martingales, as well as for stochastic integral and convolutions with respect to Poisson measures, in infinite dimensional spaces.
Marinelli, Carlo, Röckner, Michael
core   +1 more source

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